netdev - [net PATCH v2 1/9] octeonxt2-af: mcs: Fix per port bypass config

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Date:   Wed, 26 Apr 2023 11:55:20 +0530
From:   Geetha sowjanya <gakula@...vell.com>
To:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <kuba@...nel.org>, <davem@...emloft.net>, <edumazet@...gle.com>,
        <pabeni@...hat.com>, <richardcochran@...il.com>,
        <sgoutham@...vell.com>, <gakula@...vell.com>,
        <sbhatta@...vell.com>, <hkelam@...vell.com>
Subject: [net PATCH v2 1/9] octeonxt2-af: mcs: Fix per port bypass config

For each lmac port, MCS has two MCS_TOP_SLAVE_CHANNEL_CONFIGX
registers. For CN10KB both register need to be configured for the
port level mcs bypass to work. This patch also sets bitmap
of flowid/secy entry reserved for default bypass so that these
entries can be shown in debugfs.

Fixes: bd69476e86fc ("octeontx2-af: cn10k: mcs: Install a default TCAM for normal traffic")
Signed-off-by: Geetha sowjanya <gakula@...vell.com>
Signed-off-by: Sunil Goutham <sgoutham@...vell.com>
Reviewed-by: Leon Romanovsky <leonro@...dia.com>
---
 drivers/net/ethernet/marvell/octeontx2/af/mcs.c       | 11 ++++++++++-
 .../net/ethernet/marvell/octeontx2/af/rvu_debugfs.c   |  5 +++--
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mcs.c b/drivers/net/ethernet/marvell/octeontx2/af/mcs.c
index f68a6a0e3aa4..492baa0b594c 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/mcs.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mcs.c
@@ -494,6 +494,9 @@ int mcs_install_flowid_bypass_entry(struct mcs *mcs)
 
 	/* Flow entry */
 	flow_id = mcs->hw->tcam_entries - MCS_RSRC_RSVD_CNT;
+	__set_bit(flow_id, mcs->rx.flow_ids.bmap);
+	__set_bit(flow_id, mcs->tx.flow_ids.bmap);
+
 	for (reg_id = 0; reg_id < 4; reg_id++) {
 		reg = MCSX_CPM_RX_SLAVE_FLOWID_TCAM_MASKX(reg_id, flow_id);
 		mcs_reg_write(mcs, reg, GENMASK_ULL(63, 0));
@@ -504,6 +507,8 @@ int mcs_install_flowid_bypass_entry(struct mcs *mcs)
 	}
 	/* secy */
 	secy_id = mcs->hw->secy_entries - MCS_RSRC_RSVD_CNT;
+	__set_bit(secy_id, mcs->rx.secy.bmap);
+	__set_bit(secy_id, mcs->tx.secy.bmap);
 
 	/* Set validate frames to NULL and enable control port */
 	plcy = 0x7ull;
@@ -528,6 +533,7 @@ int mcs_install_flowid_bypass_entry(struct mcs *mcs)
 	/* Enable Flowid entry */
 	mcs_ena_dis_flowid_entry(mcs, flow_id, MCS_RX, true);
 	mcs_ena_dis_flowid_entry(mcs, flow_id, MCS_TX, true);
+
 	return 0;
 }
 
@@ -1325,8 +1331,11 @@ void mcs_reset_port(struct mcs *mcs, u8 port_id, u8 reset)
 void mcs_set_lmac_mode(struct mcs *mcs, int lmac_id, u8 mode)
 {
 	u64 reg;
+	int id = lmac_id * 2;
 
-	reg = MCSX_MCS_TOP_SLAVE_CHANNEL_CFG(lmac_id * 2);
+	reg = MCSX_MCS_TOP_SLAVE_CHANNEL_CFG(id);
+	mcs_reg_write(mcs, reg, (u64)mode);
+	reg = MCSX_MCS_TOP_SLAVE_CHANNEL_CFG((id + 1));
 	mcs_reg_write(mcs, reg, (u64)mode);
 }
 
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
index 26cfa501f1a1..9533b1d92960 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c
@@ -497,8 +497,9 @@ static int rvu_dbg_mcs_rx_secy_stats_display(struct seq_file *filp, void *unused
 			   stats.octet_validated_cnt);
 		seq_printf(filp, "secy%d: Pkts on disable port: %lld\n", secy_id,
 			   stats.pkt_port_disabled_cnt);
-		seq_printf(filp, "secy%d: Octets validated: %lld\n", secy_id, stats.pkt_badtag_cnt);
-		seq_printf(filp, "secy%d: Octets validated: %lld\n", secy_id, stats.pkt_nosa_cnt);
+		seq_printf(filp, "secy%d: Pkts with badtag: %lld\n", secy_id, stats.pkt_badtag_cnt);
+		seq_printf(filp, "secy%d: Pkts with no SA(sectag.tci.c=0): %lld\n", secy_id,
+			   stats.pkt_nosa_cnt);
 		seq_printf(filp, "secy%d: Pkts with nosaerror: %lld\n", secy_id,
 			   stats.pkt_nosaerror_cnt);
 		seq_printf(filp, "secy%d: Tagged ctrl pkts: %lld\n", secy_id,
-- 
2.25.1